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J. KUSTER, Jr.

; I MEANS FOR ATTAGHING LOOKS) Nd. 296,292, Patented Apr. 1, 1884.

INVBNTOR ATTORNEY N. PEYERS. Phmwliihognmtn Washinglwm D. c.

UNITED TATES hnrmy'r tries.

JOHN KUSTER, JR, or STAMFORD, CONXEOTICUT.

MEANS FOR ATTACHING LOCKS.

SPECIPICATIONIorming part Of Letters Patent NO. 295,292, dated April 1, 1884.

V Application filed February 19, 1883. (Model.)

To all whom it. may concern:.

Be it known that I, JOHN Kusrnn, Jr., of Stamford, county of Fairfield, State of Connec-ticut, have invented a new and useful Improvement in Locks; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying sheet of drawings, forming part of this specification.

This invention relates to an improvement in locks; and the invention-consists in alock designed to be fitted within a circular opening in a door, constructed with turning wings or lugs to enter into the walls of the circular opening within which the lock is fitted, whereby the lock is fixed within said opening.

In the accompanying sheet of drawings, Figure 1 is a section showing the loclncase fixed to the end of a door. view of same, partly in section. Fig. 3 is a detail of screw with lugs fixed to the heads thereof.

Similar letters of reference indicate like parts in the several figures.

This invention relates to an improvement in that class of locks in which the lock proper and the latch of the lock are separate devices fitted to opposite sides of a door connected by an intermediate plate or strip of metal andscrews. This character of lock is usually contained within a circular opening, which is bored through the door to which the lock is to be attached, and it has been customary heretofore, after the lock proper has been placed in a circular opening made for it, to apply the latch that is to be operated by the lock on the side of the door which is opposite to the lock,

and to secure the lock and the latch mechanism by long screws passing through the outer plate of the latch, through the circular hole of the door, and into some part of the case of the lock that is within the circular opening beiore mentioned; but since doors are of varying widths it has been necessary for the carpenter who attaches these locks to cut the screws designed to unite the lock with the latch, so as to render themof proper length for that purpose. This cutting of the screws,

besides being attended with loss of time, is a matter of some difficulty with carpenters,who as a rule are not supplied with proper tools for this purpose, and, besides, with such con- Fig. 2 is a plan or top.

connecting-screws referred to must be withdrawn.

To obviate this difiiculty and enable locks of the character described to be easily and promptly fixed in place, I construct my lock with two screws, A, which enter into the projections or parts a of the lock. The heads b of these screws are provided on one side with lugs or wings B, these lugs or wings having one of their sides or edges, 0, beveled and sharpened.

Now, when my lock, constructed substantially as described, is inserted within the circular opening 0 of the door and held in the required position by one hand, a screw-driver inserted in the opening 0 through the back of the door is used to turn the screwsA until the ing within the circular opening 0, and out of the position in which it is fixed. As these screws A are turned and the logs or wings B are forced into the surrounding wood, the heads of the screws are by this operation turned down and jam and bear tightly against the surface of the metal through which the screws are inserted, by this means effectually preventin g the screws from accidentallyturnin g within the circular opening 0 and the loosening of the look within the same. The latch mechanism of the lock may be now secured to the side of a door opposite the lock proper by the ordinary screws entering into the wood-work of the door, and this latch mechanism can be removed for repairs without disturbing the lock proper, if desired; but when it is desired to remove the lock, it is simply necessary by means of a screw-driver to turn the screws A in a reverse direction,which will withdraw the lugs or wings B from th eirengagement within the circular opening, and the lock can be pushed from its seat.

From the foregoing description it will be seen no long and especially-constructed screws are required to unite the latch with the lock;

e no necessity exists for adapting the length of the screws to the width of the door to which the lock is to be applied, and no particularly careful adjustment is called for to secure the lock in place; but, to the contrary, any carpenter with little or no previous instruction can readily apply the locks of the kind de scribed with even less trouble than he can apply locks and latches of ordinary construction.

I am aware that an anchor for looks provided with a slotted head having an angular spur or foot projecting from its base is not, broadly, of my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The lock-case providedat or near its inner end with the external lateral projections, at, having screw-threaded holes therein, combined with the screws A, Jositively engaging the screw-threaded holes in said lugs, and having slotted heads 6, and the sharpened wings or lugs B, made directly on saidhead to enter the wood of the door to hold the lock in place, as shown and described.

JOHN KUSTER, J'R,

Witnesses:

LOUIS QUITMAN, HERMAN W. BoENIscH. 

